Apparatus for treating and roasting waste materials.



No. 813,385. PATENTED FEB. 20, 1906. P. W. KOONZ. APPARATUS FOR TREATINGAND ROASTING WASTE MATERIALS.

APPLICATION TILED DEO.1, 1905 2 SHEETSSHBBT 1.

No. 813,885. PATBNTED FEB. 20, 1906.

F. W. KOONZ.

APPARATUS FOR TREATING AND ROASTING WASTE MATERIALS.

APPLICATION FILED DEO.1,1905.

' 2 SHEBTSSHEET 2.

mx a

UNITED STATES PATENT OFFICE.

FREDERICK WV. KOONZ, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO J.WALTER DOUGLASS, TRUSTEE, OF PHILADELPHIA, PENNSYLVANIA.

APPARATUS FOR TREATING AND ROASTING WASTE MATERIALS.

Specification of Letters Patent.

Patented Feb. 20, 1906.

Application filed December 1,1905. Serial No. 289,734.

To Ll/ZZ whom, it necty concern:

Be it known that I, FREDERICK W. KooNZ, a citizen of the United States,residing at the city of Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented certain new and useful Improvementsin Apparatus for Treating and Roasting I/Vaste Materials, of which thefollowing is a specification.

My invention has relation to an apparatus for treating and roastingwaste matter and in such connection it relates particularly to theconstruction and arrangement of such apparatus.

The principal objects of my invention are, first, to provide anapparatus forproducing fertilizer components by a single operation fromhair, fleshings, skivings from tanneries, kitchen and leather waste andother similar materials by heating and driving off by evaporation theliquid matter therefrom and roasting remaining waste matter; second, toso shape a receiving receptacle or drum for the waste material as toinsure an unaided discharge of the contents of the same when a closureof the receptacle or drum is removed therefrom third, to so inclose thereceptacle or drum by a furnace as'to permit of the dis charge of thecontents without interfering with the heating action of the furnace,and, fourth, to permit of testing or examining its contents, withoutopening the receptacle or drum.

The nature and characteristic features of my invention will be morefully understood from the following description, taken in connectionwith the accompanying drawings, forming part hereof, in which Figure lis a longitudinal sectional view of an apparatus for treating androasting waste matter, consisting of a receptacle or drum frusto-conicalin outline and of a furnace partially surrounding the same embodyingmain features of my invention. Fig. 2 is an elevational view of thefront or discharge end thereof. Fig. 3 is a top or plan view of aportion of the drum and of a cover or cap for closing an opening in thesame, and Fig. 4 is a side elevational view of a portion of thereceptacle or drum and of the projection of a ring carried by the drumand also showing the inclined surface of the projection.

Referring to the drawings, a is a receptacle or drum, preferablyfrusto-conical in outline, which is closed at the end of smallestdiameter a by a wall a The wall a serves to support a tube orcylindrical body arranged centrally therein, which tube forms an outletfor gaseous matter generated in the drum and for conducting the same toany suitable place of discharge-for instance, a chimney. (Not shown.) Atthe expanded end a of greatest diameter the receptacle or drum a isclosed by a removable door 0, preferably consisting of an inner door 0and an outer door 0 held certain distances apart by stay-bolts c, toform when the same closes the end a of the receptacle or drum (4 anair-chamber 0 The object of this chamber is to prevent loss of heat fromthe receptacle or drum a by radiation and at the same time to protectthe closure from the influence of cold air tending to lower thetemperature in the receptacle or drum a, and thus to retard thetreatment of waste matter introduced into the same.

The door 0 can be readily connected and disconnected from the receptacleor drum a by the following preferred mechanism, to wit: To a bolt 0 ofthe door a are movably secured radial arms 0 connected with each otheradjacent to their free ends by ribs 0 forming combined an annulus, asshown in Fig. 2. The ends of the arms 0 when the door 0 is to be closedare by a slight movement of their fulcral point 0' from left to right inFig. 2 brought into engagement with an inclined portion 0 of projectionsor keeper-plates preferably formed integral with a ring i, surroundingthe end a of the receptacle or drum a, as shown in Figs. land 2. Bymoving the arms 0 along the inclined surface 0 of each of theprojections c the door 0 is forced into the receptacle or drum (1 andagainst the in terior surface of the same to thus form a liquid and gasproof joint between the inner surface of the receptacle or drum a andthe periphery of the doors 0 and 0 At the same time any wear between thedoors and the wall of the receptacle or drum a can be readilycompensated for by the inclined surface 0 of the projection 0 When thedoor 0 is to be opened, a slight movement of the arms 0 will bring thesame out of engagement with the projection 0 after which the door bymeans of the eyes m, secured thereto, can be moved from the receptacleor drum a by any suitable means. (Not shown.)

Preferably intermediate of the ends the receptacle or drum a isprovidedwith an inletopening g, which when the receptacle or drum aoccupies the position shown in Fig. 1 permits of the introduction ofwaste matter into the same. The inlet-opening g is normally closed by adoor h, consisting of a disk h, supporting by a bearing k and bolt'hradial arms h", engaging keeper-plates h of a cap k secured to thereceptacle a, as shown in Figs. 1 and 3. The bolt h is provided with aneye 71. by means of which the door It may be readily lifted from orinserted into the cap h to close the inlet-opening g.

As shown in Fig. 1, the receptacle or drum a is surrounded to its end aby a casing or housing forming a furnace d. This casing or housing maybe formed of masonry or metal, (not shown,) in which latter instance thesame may be lined with brick or may consist of a double metal shell,between which heatnonconducting material can be placed. The tube oroutlet 1) of the receptacle or drum (1, by passing through the wall d ofthe furnace (1 serves, in conjunction with the wall, to support the sameat its end a A bearing Z, inserted in the wall d permitsof a freerotation of the tube b therein. At the end a the receptacle or drum aloosely passes through the wall 01 of the furnace d and extends be yondthe same for a distance sufficient only to permit of an unimpairedsupport of the receptacle or drum a by rollers 7c engaging the ring 'Lthereof, as shown in Fig. 2.

The preferred means for rotating the receptacle or drum aconsists of asprocket-wheel n, secured to the tube or outlet 1), which sprocketwheelwhen driven by means not shown imparts its rotary movement by thetube 1) to the receptacle or drum a, rotating the same in the bearing Z,and the rollers 7c. The waste matter introduced into the receptacle ordrum (1 will be loosened, agitated, and stirred by the rotation of thereceptacle or drum (1, and thus all parts thereof will be brought intocontact with the heated walls of the same from the furnace. matter, ifsuch is present in the waste material, will be removed therefrom byevaporation and by discharge through the outlet 1), after which a rapidroasting of the remaining waste matter will be accomplished, whichcharred matter when ground is ready for use as a fertilizer component.The casing or housing I) may be supplied with heat from any suitablesource. However, in the present instance, asshown in Fig. 1, a grate eis arranged below the receptacle or drum a and adjacent to the expandedend a of the same, so as to subject that portion of the receptacle ordrum containing the greater amount of waste matter to the directinfluence of heat from the grate e. An outlet f for the products ofcombustion is arranged beyond the bridge-wall g, and at the lower partof the fire- Furthermore, the liquid chamber (1, which prevents a readywithdrawal of heat generated in the furnace (1 through the outlet fthereof. In the wall of the upper portion of the furnace d is arrangedan opening (1, closed by a door (1 through which when a door h of thereceptacle or drum a has been opened waste matter is introduced into thereceptacle or drum a. When the door 0 is opened, the contents of thereceptacle or' drum a, owing to the conical shape of the same, willreadily leave the receptacle and which is assisted in the discharge bythe rotation of the receptacle or drum (1. In order to permit of theexamination of the contents of the receptacle or drum a, a peep-hole,consisting of a tubular body 0, is arranged in the door 0, which isnormally closed by a removable cap 0. To prevent escape of gases fromthe receptacle or drum (1 during examination of the contents thereof,the same is rotated so as to place the peep-hole 0 in a position inwhichit is covered by the contents of the receptacle.

In order to determine the progress of the coking of the waste matter, acertain portion thereof can be readily removed therefrom by the openingof the cap 0, closing the peephole 0. bring the receptacle or drum a toa standstill in the position shownin Fig. 1, in which the opening orpeep-hole 0 is closed by the waste material, as otherwise obnoxiousgases may escape through the same during the testing of the contents ofthe receptacle or drum (1. After the roasting of the waste matter hasbeen completed in the receptacle or drum a the door 0- is opened and thecharred matter However, care must be exercised to readily dischargedtherefrom, owing to the frusto-conical shape of the receptacle or druma, assisted by the rotary movement of the receptacle or drum a, whichtends to conduct all waste matter toward the outlet thereof. In thismanner no special means are required to discharge the contents of thedrum or to hold the same in an oblique position, which would insure suchdischarge by gravity.

Having thus described the nature and objects of my invention, what Iclaim as new,

and desire to secure by Letters Patent, is-

,1. In an apparatus for treating and roasting waste matter, a receptacleor drum frustoconical in outline, means for supporting said drum so asto hold the same with its central longitudinal axis in substantially ahorizontal plane, a closure for said drum engaging the end having thegreatest diameter, saiddrum arranged when rotated and when said closureis removed, to discharge the contents unaided.

2. In an apparatus for treating and roasting waste matter, a receptacleor drum frustoconical in outline, an outlet arranged centrally to saiddrum and at the end of smallest diameter, a closure arranged at the endof greatest diameter, means for rotatably supporting said drum and forholding the same so that its central longitudinal aXis is insubstantially a horizontal plane, said drum arranged to receive Wastematter and to remove liquid matter therefrom by evaporation through saidoutlet and When the closure is removed, to discharge the remainingmatter unaided.

3. In an apparatus for treating and roasting Waste matter, a receptacleor drum frustoconical in outline, an outlet arranged centrally to saiddrum and at the end of smallest diameter, a closure arranged at the endof greatest diameter, means for rotatably supporting said drum and forholding the same so that its central longitudinal axis is insubstantially a horizontal plane, said drum arranged to receive Wastematter and to remove liquid matter therefrom, by evaporation, throughsaid outlet and when the 010- sure is removed, to discharge theremaining matter unaided, and an inlet for Waste matter arranged in saiddrum intermediate of said outlet and closure and means for closing saidinlet.

4. In an apparatus for treating and roasting Waste matter, a receptacleor drum frusto conical in outline, means for supporting said drum so asto hold the same With its central longitudinal axis in a horizontalplane, a closure for said drum engaging the end having thegreatestdiameter, said drum arranged when rotated and When said closureis removed, to discharge the contents unaided, and means arranged insaid closure for removing portions of the contents When the closureengages said drum.

5. In an apparatus for treating and roasting Waste matter, areceptacleor drum having open and closed ends, a tube forming an outlet forgaseous matter and supporting said receptacle at its closed end, aclosure for said receptacle or drum, means for supporting saidreceptacle or drum at its open end, and means for surrounding saidreceptacle, said surrounding means arranged so as to permit ofthe'heating of said receptacle or drum and of the discharge of thecontents thereof, Without loss of heat.

6. In an apparatus for treating and roast ing Waste matter, a receptacleor drum having open and closed ends, a tube forming an outlet forgaseous matter and supporting said receptacle or drum at its closed end,a closure for said receptacle or drum, means for supporting saidreceptacle or drum at its open end, an inlet-opening arranged in thebody of said receptacle or drum, means for closing said inlet and meansfor rotating said tube and by the same, said receptacle or drum.

7. In an apparatus for treating and roasting Waste matter, a receptacleor drum having open and closed ends, a tube forming an outlet forgaseous matter and supporting said receptacle at the closed end thereof,a closure for said receptacle or drum, at its open end, meanssurrounding said receptacle or drum and forming a furnace for thegeneration of heat and arranged so as to permit of discharge of thecontents of said receptacle or drum, Without loss of heat or interferingWith the discharge of matter therefrom, means for supporting saidreceptacle or drum at its open end and beyond said furnace, an inletarranged in said receptacle or drum, means for closing said inlet, meansfor rotating said tube and by the same said. receptacle, and meansarranged in the closure for said receptacle or drum for removingportions of the contents thereof, Without removing said closure.

8. In an apparatus for treating and roasting Waste matter, thecombination of a frustoconical receptacle or drum having open and closedends and" mounted in a furnace having an opening in the top With aclosure therefor, a grate in the bottom of said furnace and an outletfor the escape of products of combustion from said furnace, doors in thebody and one end of said receptacle or drum, means for supporting saidreceptacle or drum at its open end and for permitting of rotationthereof in said furnace and means for holding the end door of saidreceptacle or drum in operative position against back pressure.

In Witness whereof I have hereunto set my signature in the presence oftwo subscribing Witnesses.

FREDERICK W. KOONZ.

Witnesses:

WILHELM VOGT, THOMAS M. SMITH.

